package com.greedy;

public class Solution13 {
    public boolean lemonadeChange(int[] bills) {
        int five = 0;
        int  ten = 0;
        for (int bill : bills) {
            if (bill == 5) five++;
            else if (bill == 10) {
                five--;
                ten++;
            } else {
                if (ten > 0) {
                    ten--;
                    five--;
                } else {
                    five -= 3;
                }
            }
            if (five < 0 || ten < 0) return false;
        }
        return true;
    }
}
